I/flutter (25517): No Material widget found.
I/flutter (25517): ListTile widgets require a Material widget ancestor.
I/flutter (25517): In material design, most widgets are conceptually "printed" on a sheet of material. In Flutter's
I/flutter (25517): material library, that material is represented by the Material widget. It is the Material widget
I/flutter (25517): that renders ink splashes, for instance. Because of this, many material library widgets require that
I/flutter (25517): there be a Material widget in the tree above them.
I/flutter (25517): To introduce a Material widget, you can either directly include one, or use a widget that contains
I/flutter (25517): Material itself, such as a Card, Dialog, Drawer, or Scaffold.
I/flutter (25517): The specific widget that could not find a Material ancestor was:
I/flutter (25517): ListTile简而言之：
使用了Material 风格的widget 就需要Scaffold作为根布局
什么是Material 风格的widget，比如
- AppBar
- BottomAppBar
- FloatingActionButton
- Drawer
- SnackBar
- BottomSheet
- BottomNavigationBar
- ListTile
- 等等
需要Scaffold作为根布局，意为用Scaffold包裹起来即可
return Scaffold(
appBar: AppBar( ),
bottomNavigationBar: BottomNavigationBar( ),
floatingActionButton: FloatingActionButton( ),
drawer: Drawer(),
.....
);